Roland BT-1

Versatile Add-On Trigger Pad for V-Pads and Acoustic Drums.
The compact and affordable BT-1 Bar Trigger Pad makes it easy to add electronic triggering to any drum kit. With a curved shape that mounts on the side of a V-Drums V-Pad or acoustic drum, it provides convenient playing access without disturbing your existing kit layout. The BT-1 is great not only for playing sounds in a V-Drums module or SPD-series percussion pad, but also for convenient control of a variety of functions like start/stop of backing songs and phrase loops, and much more.
Compact and reliable single-trigger pad
Curved shape for mounting on a V-Pad or acoustic drum
Quick and easy mounting through a drum tension rod; attachment parts for standard rod-type mounts included
Internal design eliminates false triggering while playing surrounding drums and/or pads
Use with a V-Drums module or SPD-series percussion pad to trigger sounds and control functions such as start/stop of backing songs and phrase loops, effects on/off, kit selection, tap tempo, and more
Great way to add electronic triggering to any acoustic kit or additional triggering to a V-Drums set